<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>登录</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-image: url("img/bg.jpg");
            background-size: cover;
            font-family: "微软雅黑", sans-serif;
        }

        .login {
            position: absolute;
            top: 50%;
            left: 50%;
            margin: -150px 0 0 -150px;
            width: 300px;
            height: 300px;
        }

        .login h1 {
            color: #555555;
            text-shadow: 0px 10px 10px #CDC673;
            letter-spacing: 2px;
            text-align: center;
            margin-bottom: 20px;
        }

        input {
            padding: 10px;
            width: 100%;
            color: white;
            margin-bottom: 10px;
            background-color: #555555;
            border: 1px solid black;
            border-radius: 5px;
            letter-spacing: 2px;
        }

        form button {
            width: 100%;
            padding: 10px;
            margin-bottom: 10px;
            background-color: #CDC673;
            border: 1px solid black;
            border-radius: 5px;
            cursor: pointer;
        }
    </style>
</head>
<body class="login">
<h1>Login</h1>
<!--在此处编写表单标签实现效果-->
<form action="" method="post">
    <input type="text" name="user" placeholder="请输入用户名">
    <input type="text" name="password" placeholder="请输入密码">
    <button type="submit">注册</button>
    <button type="submit">修改</button>
</form>
</body>
</html>